Figure 7

The temperature dependence of the UCL integral intensity (normalized at 300 K) of Er2O3 NPs, Ag-SiO2-Er2O3 composites and bulk NaYF4:Yb, Er on 980 nm light excitation.
The temperature dependence of the UCL integral intensity (normalized at 300 K) of Er2O3 NPs, Ag-SiO2-Er2O3 composites and bulk NaYF4:Yb, Er on 980 nm light excitation.